Let A is behind B in a race.B is having initial lead of 's' and velocities of A and B are VA and VB respectively.Given that VA > VB . We know sometime later A will overtake B. But , what is wrong with the following ...
Some questions on Permutation and combination for revision..... Q.1 Find the no of ways in which a 3 digit number xyz can be formed from the digits {1,2,3,4,5,6,7,8,9} such that x y z are in AP and x≠y≠z. Q.2 The number o ...
